Someone who doesn't think for themselves and blindly, unquestioningly believes what they are told, even though it conflicts with their own senses and experiences.
They think 2+2=5 because they are told it does by an "authorityfigure".
That guy thinks that Osama Bin Laden stood down NORAD on September 11th, he's areal 225.
Taken from the novel 1984 scene where Winston is tortured into thinking 2+2=5.
So, 225 is basically something that we are bullied into accepting as true, even though it isn't.